Method and system for analysis of false positives produced by an

Details Method and system for analysis of false positives produced by an Method and system for analysis of false positives produced by an

1992-02-28

1994-02-22

Envall, Jr., Roy N.

Boots, shoes, and leggings

382 6, 36441301, 36441322, 36441323, G06F 1542, G06F 1570, G06K 946

Patent

active

052893740

ABSTRACT:
A computerized method and system for reducing the number of false-positive detections of nodule candidates in the detection of abnormalities in digital chest radiography. The image is initially subjected to an image difference technique where the detection sensitivity is increased so as to avoid missing small nodules which might otherwise go undetected. Such a technique tends to increase the number of false-positives, however, leading to possible incorrect diagnoses of the radiographs. To reduce the number of false-positives, feature extraction techniques are applied to grown regions around the nodule candidates, in order to provide computer generated information concerning the candidates. A data base of parameters common to false-positives is compared to calculated parameters of a candidate of interest. The candidates with grown region parameters within the data base range common to false-positives are eliminated as being probable false-positive detections due to normal background anatomical features.

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"Mammogram Inspection by Computer"-Wolfgang Speisberger (IEEE Trans, on Biomed. Engr.-Apr. 1979); pp. 213-219.

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